Improvement in grindstones



J. P. SHILLABER.

GRINDSTONE.

No. 49,928. Patented Sept. 12, 1865.

Mw Q .m

UNITED STATES PATENT OFFICE.

JOHN F. SHILLABER, OF PORTSMOUTH, NEW HAMPSHIRE.

IMPROVEMENT IN GRINDSTONES..

'Specification forming part of Letters Patent No. 49,928, dated September 12, 1865.

To all whom it may concern:

Be it known that I, J oHN F. SHILLABER, of Portsmouth,in the county of Rockingham and State ot' New Hampshire,have invented a new and useful Improvement in Grindstones; and I do herebydeclare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, for-ming part ot' this specification.

The present invention consists in so arranging the receptacle or vessel containing the Water, and through which the grindstone passes when revolved, in such a manner that .it can be readily adjusted to any desired height with regard tothe stone, according to the quantity of water necessary to be supplied to its surface, or set entirely away therefrom, so that the stone when not in use shall not remain in the water, as has heretofore been the case, and which, asis well-known, greatly tends not only to soften the stone, but also otten seriously injures it, causing it to peel orcrumble to pieces.

the same.

d d represent the water box or receptacle, placed below the grindstcne and in the same plane as that of its revolution, resting at each end upon the cran'k portion f of horizontal cross-rods g, turning in bearings ot' the supporting-legs h h of the frames b b. Upon one end ot' each of these rods g, but on opposite sides of the frames b b, is an upright handlelever, Zyl', from one of which, l', passes a connesting-rod, m, to the lower end of the link piece fn, hung upon the other crank-shaft at the oppositeend of the frames, so that when one crank-shaft is moved or turned by its handle the other will be correspondingly operated..

In the box d the water used is placed as represented in Fig. 1 by red lines, and it also catches all the drippings from the stone when water is allowed to drop upon it from a reservoir or cask, properly arranged therefor.

From the above description it is apparent that by moving either one of the lever handles to the right or left, according to its position with regard to the stone, the water-re ceptacle can be either raised or lowered,`and in direct proportion to the length of movement given to the handle, thereby bringing the water therein nearer to or farther l'rom the stone, as may be desired or necessary to give the requisite moisture to the surface of the stone, or'

it can be sufficiently lowered to remove it entirely from contact `with the stone, a pin or other suitable device being used to hold the handle in its position and preventit't'rom moving back.

There are various ways in which the waterbox may be arranged to accomplish the above results without departing from the principles ofthe presentinven tion, as hereinbetore stated, and therefore I do not intend to limit myself to any particular arrangement thereof'.

I claim as new and desire to secure by Letters Patent- 'So arranging the lower water box or receptacle of a grindstonethat it can be raised toward or lowered from the stone, substantially as herein described, and tor the purposes specified.

The above specification" ot' my invention signed by me this 26th day of May, 1865.

JOHN F. SHILLABER.

Witnesses:

ALBERT W. BROWN, M. M. LIVINGsToN. 

